Can you both ldd sandbot.so then ls -ali the path to libstdc++.so.6 - for me the symlink points to libstdc++.so.6.0.22 which I guess is pretty recent
@RoboCop if you're on Ubuntu 14 you might need to compile yourself or possibly update libstdc++ to a newer version if possible.
@Nubzior you seem to be on a pretty recent version of Debian so might only be off by a minor version. Do the above anyway and we'll see what's what.

Can you both ldd sandbot.so then ls -ali the path to libstdc++.so.6 - for me the symlink points to libstdc++.so.6.0.22 which I guess is pretty recent
@RoboCop if you're on Ubuntu 14 you might need to compile yourself or possibly update libstdc++ to a newer version if possible.
@Nubzior you seem to be on a pretty recent version of Debian so might only be off by a minor version. Do the above anyway and we'll see what's what.

Did you try using clang++ compiler instead of g++? Also I use my Linux Mint Laptop for recompiling some broken Metamod addons. I'll give the recompiling for SB a go

Well you be pleased to know from when I commented out those 'static_assert' lines and recompiled sandbot in my Linux Mint it appears to be working now, BUT only in standalone "liblist.gam" mode. I did try sandbot loaded only from Metamod but they don't seem to be selecting which team they can randomly pick.

And here is the ldd and ls -ali results of this recompiled sandbot.so:-

Hm, so it's an older version of gcc but it looks like you have a pretty new version of libstdc++ installed - mine in 6.3.0-12 but yours is 6.3.0-18. Are you using a non-Ubuntu repo/mirror?
Reading https://gcc.gnu.org/onlinedocs/libst...anual/abi.html it looks like using new libraries while linking with old libraries should work, but doesn't as we can see.